Which of the following is/are examples of rotary motion?
Motion of the blades of the ceiling fan
Motion of the potter's wheel
Motion of planets around the sun
All of these
When a drill bores a hole in piece of wood, it describes.
(i) Rotary motion (ii) Translatory motion
(iii) Curvilinear motion (iv) Oscillatory motion
(iii) & (iv)
(i) & (ii)
(i) & (iii)
(i) & (iv)
Different size bags are required to pack separately one kilogram each of cotton, potatoes and iron chunks. Which property of matter explains this?
Temperature
Density
Mass
Pressure.
The motion in which all points of the body move through the same distance in the same time is.
Rotary motion
Linear motion
Circular motion
Translatory motion
An early device used for measuring time was
Watch with balance wheel
Pendulum clock
Sundial
Sand glass
Match the following and select the correct option from the codes given below.
(a) - (ii), (b) - (i), (c) - (iv), (d) - (iii)
(a) - (iii), (b)- (ii), (c) - (i), (d) - (iv)
a- (i), (b)- (iv), (c) - (iii), (d) - (ii)
(a) - (iv), (b) - (iii), (c), - (ii), (d) - (i)
Which of the following is false?
The motion of a swing is rectilinear as well as circular
A guitar shows vibratory motion
Pendulum of a clock shows oscillatory motion
A ceiling fan shows rotatory motion.
In circular motion the
Direction of motion is fixed
Direction of motion changes continously
Acceleration is zero
Velocity is constant
(a) - (v), (b)- (iv), (c) - (i), (d) - (ii), (e) - (iii)
(a) - (i), (b)- (ii), (c) - (iii), (d) - (iv), (e)-(v)
(a) - (ii), (b)- (iv), (c) - (v), (d) - (iii), (e) - (i)
(a) - (iii), (b) - (ii), (c) - Iv), (d) - (v), (e) - (i)
Which of the following statements below should be used while using the symbol for a unit of a physical quantity?
The symbol named after scientist should have capital letter.
They take plural forms
They can be written in full
They should be written only in the agreed symbols.
